2026 ICD-10-CM Diagnosis Code E09.42Drug or chemical induced diabetes mellitus with neurological complications with diabetic polyneuropathy

ICD-10-CM Codes›E00–E89›E08-E13›E09

ICD-10-CM E09.42
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

E09.42 is a billable ICD-10-CM diagnosis code for drug or chemical induced diabetes mellitus with neurological complications with diabetic polyneuropathy. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as polyneuropathy due to diabetes mellitus. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Diabetes mellitus with complication; Diabetes mellitus, due to underlying condition, drug or chemical induced, or other specified type; and Polyneuropathies.

Code Identity

ICD-10-CM Code
E09.42
Billable Status
Yes — Valid for Submission
Code Describes
Drug or chemical induced diabetes mellitus with neurological complications with diabetic polyneuropathy
Short Description
Drug/chem diabetes w neurological comp w diabetic polyneurop
Parent Code
E09.4
Drug or chemical induced diabetes mellitus with neurological complications

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE08-E13Diabetes mellitus
CategoryE09Drug or chemical induced diabetes mellitus
This CodeE09.42Drug or chemical induced diabetes mellitus with neurological complications with diabetic polyneuropathy

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Polyneuropathy due to diabetes mellitus
  • Polyneuropathy due to drug induced diabetes mellitus
  • Polyneuropathy due to secondary diabetes mellitus

Coding GuidelinesGuidance

The diabetes mellitus codes are combination codes that include the type of diabetes mellitus, the body system affected, and the complications affecting that body system. As many codes within a particular category as are necessary to describe all of the complications of the disease may be used. They should be sequenced based on the reason for a particular encounter. Assign as many codes from categories E08 - E13 as needed to identify all of the associated conditions that the patient has.

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Drug or chemical induced diabetes mellitus with diabetic neuralgia

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Diabetes, diabetic(mellitus) (sugar)
      • due to drug or chemical
        • with
          • neuralgia
    • Diabetes, diabetic(mellitus) (sugar)
      • due to drug or chemical
        • with
          • polyneuropathy

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR END003
Diabetes mellitus with complication
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR END006
Diabetes mellitus, due to underlying condition, drug or chemical induced, or other specified type
Default principal diagnosis: inpatient No · outpatient No
CCSR NVS015
Polyneuropathies
Default principal diagnosis: inpatient No · outpatient No

Patient EducationClinical

Diabetes

Diabetes, also known as diabetes mellitus, is a disease in which your blood glucose, or blood sugar, levels are too high. Glucose is your body's main source of energy. Your body can make glucose, but it also comes from the food you eat. Insulin is a hormone made by your pancreas.

The full article covers:

  • What is diabetes?
  • What are the types of diabetes?
  • What causes diabetes?
  • Who is more likely to develop diabetes?
  • What are the symptoms of diabetes?
  • How is diabetes diagnosed?
  • What are the treatments for diabetes?
  • Can diabetes be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert E09.42 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
249.60 Sec DM neuro nt st uncn
Approximate The match is approximate rather than exact.
ICD-9-CM
249.60 Sec DM neuro nt st uncn
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.
ICD-9-CM
357.2 Neuropathy in diabetes
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About E09.42Overview

Is E09.42 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report drug or chemical induced diabetes mellitus with neurological complications with diabetic polyneuropathy on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of E09.42?

Under the General Equivalence Mappings, drug or chemical induced diabetes mellitus with neurological complications with diabetic polyneuropathy converts to ICD-9-CM 249.60 (sec DM neuro nt st uncn), 249.60 (sec DM neuro nt st uncn), and 357.2 (neuropathy in diabetes). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.